I have 'em installed on my Tremonti SE along with the adjustable stoptail.
Can't tell about sustain but the whole gtr feels just tighter & stiffer (in a good way)
Art has a "Stiffy" :shock:
It happens sometimes :lol:
2007 Singlecut Satin Artist Pack Emerald Green
2007 Tremonti SE Rhodesian Ridgeback (modded beyond the point of sanity)
+ some other gear